[Animation/ Audio story] My sister knows I like ballbusting! Part 2

(This is a role playing story between two consenting adults) "Hey Kris, what's up!" Jess said, walking up behind me as I was doing the dishes, giving me a fright. "Ya know, just the usual, sis," I replied, rinsing a plate.. A chill washed over me as I listened to the water flowing from the tap. I knew she was up to something; she had hadn’t left me alone since… that first time. Sure enough, without warning, I felt Jess slide her hand down the front of my shorts, her soft fingers wrapping around my balls. She squeezed them gently, a soft giggle escaping her lips as she pushed up against me. "Got your nuts~" she whispered into my ear as I jumped slightly. "Oooh... fuck.... my balls, Jess! Again?" I moaned. The pain was already pulsing over me as she squeezed harder on my trapped testicles! She was so quick now, always getting the perfect grip, and the pain grew as she took a better hold of my jewels and twisted them a little! "Mhmm, your little nutsies are feeling snug in there. Do they still hurt from earlier?" Jess asked, her voice teasing as she pinched my testicles together. I couldn’t hold back the groan that slipped through my clenched teeth. "Y-yes, but it's… its fine… " I said through the pain. I didn’t want to discourage her; the way she enjoyed this was something I never thought I’d experience with my own sister, but holy fuck, it ached so bad! Since that first time Jess squeezed my balls, she’d become obsessed with it. She’d often come to me and instantly go for my nuts, asking questions about the sensation, eager to hear the details of the pain she fell in love with. It was strange; it started off as this little experiment between us, but it quickly became more about her than me, as having this pain in my balls THIS often was overwhelming! "Mmmm ... fuck… it hurts," I groaned involuntarily, my body tensing as Jess's grip tightened on my testicles and I bucked forward. The sensation was a mix of intense pain and a slight pleasure that was becoming all too familiar. She had a way of making me feel so exposed, so vulnerable, and there was nothing I could do! We lived in the same house. She was always there! "They're like little water balloons…" Jess giggled, her voice filled with excitement as she squeezed even harder. "Almost squishy! Do you feel that too?" "Aaargh... yes, I mean... I don't know," I grunted through the pain, trying to keep my composure as she playfully tormented my nuts. Her touch was way more aggressive than when she first started going for my balls, yet she had a way of making it seem almost innocent, as if she was just playing a harmless game. A harmless game with my most sensitive spot! "Tell me, Kris, am I hurting your ballsies?" she asked, her voice dripping with this faux sweetness. She always talked in a way that made me feel like she was genuinely interested in the sensation she was inflicting, like hearing me say it was part of the joy for her. "Yes, Jess, you're hurting them," I admitted, my voice strained. Despite any pleasure I found in this, having her ask me questions like this so directly still felt really embarrassing. "Good! Do you know what would hurt even more?!" She asked. "Oooh…. fuck! W-what?! " I sputtered, trying to stay calm but failing miserably as I felt her fingers pinching down onto every hypersensitive nerve in my testicles as she got more excited and causing a burst of agony to wash over me. "If I kicked you right in the nuts!" She said, squeezing tight and sending a shockwave of terror and pain through me, my heart racing at the thought of her delicate foot striking me in the balls! "Jess.... oooh.... I just... mmmm, my balls.... I don't think I can... take a kick! It hurts so much!" I sputtered out, trying to imagine any way to actually endure such a thing. "Come on, Kris! Just think about it. The moment my foot connects with your balls, the way they'll squish, and that pain from having... me.... mmmm... your own sister, kicking you straight in the nuts!! And after, when you're all curled up, the look on your face, knowing that I had the power to do that to you!" Her voice was almost desperate, as a slight moan pierced her lips as she thought about it. The mental image was… overwhelming, and I couldn't help but feel a mix of fear and arousal as she described the scene so vividly. The mental image that her words created both haunted and fascinated me, and my mind raced... But could I really do it? Could I really let my sister kick me right in the balls? "Jess, I... I don't know, maybe... just once..." I stammered, my voice shaking with fear. The mere idea was making me sweat! "Really? You'll let me kick your nuts? Oh, Kris, you're so fucking amazing! OK, OK, spread your legs!" Her eyes lit up as she let out a little squeal of delight. My knees nearly buckled at her words. Spread my legs? For her to kick me in the balls? Like, right NOW?! Panic set in, but something else did too. A strange sense of anticipation, a thrill that was building rapidly inside me, threatening to burst like a volcano. "Jess, w-wait, I don't know... right now?!" Jess released her grip, and she took a step back as I pivoted towards her, her eyes gleaming with what seemed to be pure delight. She had gone from pleading to fully in control in a split second, and my brain was still trying to catch up! The thought of her actually kicking my balls was so intense, so real, and so fucking terrifying that my legs shook! “Come on, Kris! Don’t be such a baby! You said you’d let me! You want it! I know you do! You love when I squeeze your balls, and this will just be even better, right? Right!?” Jess said, her voice so intent on getting what she wanted. She took another step back as she brought one leg back, giving me space as she judged the distance, and the tension was almost intoxicating! "Spread your legs just a little further, Kris, and put your hands behind your back. I don’t want you blocking them instinctively!" Jess instructed, her voice taking on a commanding tone that sent a fresh wave of fear through my trembling body. I swallowed hard, trying to push down the nerves that were bubbling in my throat. She was serious. My sister actually wanted to kick my balls, and here I was, about to let it happen. I did as she said, my legs shaking as I widened my stance, exposing my crotch to her. "Good boy," Jess purred, her hands on her hips, her posture screaming with confidence. "God... this is going to hurt so fucking much!!" My eyes widened like saucers as she took her position, her body slightly twisting as she prepared to do the unthinkable. And just like that, she launched her leg forward with a speed that was surprising for someone her size, and her foot connected with my testicles with a sickening thud that echoed through the kitchen! "Ooooh no!! Uuuuuuuuuu" I howled as my cry turned into sad moans. The second Jess's foot contacted my balls, it was as if the universe had imploded right between my legs. The pain was so intense, so all-consuming, that I couldn't do anything but collapse onto the cold, hard kitchen floor, my legs curling up into a fetal position. The pain was SOO much worse than I ever imagined! How could this hurt this fucking much!? I squinted my eyes shut as the blasts of pain pulsed from seemingly everywhere and my whole body twitched! My legs kicked involuntarily as I tried ANYTHING, anything to help the pain go away! But… it didn’t help. “My god, that was AMAZING! Did you feel how they just... squished against my foot?! It's like... I can still feel the impact, Kris! Wow, I can't believe it! I actually kicked you! I kicked you right in the nuts!” Jess was practically bouncing with pleasure, her eyes sparkling with the thrill of her first successful ball kick as I laid there, writhing in pain. She had always loved the power she had over me with her squeezes, but this was a whole new level! "It must've hurt so much, didn't it? Having your sister kick you right in the balls like that..." Jess said, letting out a slight moan at the same time. "Please... tell me... did it?" I was barely breathing, my vision swimming with stars. The pain was unbearable, but somehow, I nodded and gasp out a "Yes…" "W-why..." She immediately asked. The question almost didn't seem real. What did she expect? “Huh?” I questioned, unsure how to even process her request “Why did it… hurt!?” she chirped back, bending down to rub my back as I rocked with pain. What did she expect? Or, wait… she just… wanted me to say it… “It…. You just… kicked me in the balls…” I sighed, admitting again that she had hurt me so badly by going for my testicles. She bit her lip, and one of her hands sunk below the horizon as she let out a soft moan. “Mmmm fuck yea…. I kicked them, I kicked your nuts so fucking hard! And…. I’m never going to stop, Kris… I love kicking you in the balls!"